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description=Format your JSON code online with our free tool. Clean, efficient, and easy to use.;

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Text of the page (random words):
json code formatter online tool w3docs w3docs livros aprender html aprender css aprender javascript aprender git aprender java aprender php aprender python cursos quizzes exercícios snippets ferramentas general tools html editor password generator html encoder code diff json beautifier todos os 13 color tools color picker color converter color mixer color hex colors hsl todos os 10 string tools string length calculator md5 hash generator sha256 hash generator string reverse url encoder todos os 19 code formatters javascript formatter css formatter html formatter json formatter php formatter pesquisar na w3docs k pt english en deutsch de русский ru français fr español es português pt italiano it entrar home tools code formatter tools json code formatter paste your json code and click format to clean it up with prettier tab size and for js ts trailing semicolons are configurable switch languages from the toolbar html css less scss javascript typescript json php format load example copy clear tab size about the json formatter this tool reformats json with consistent indentation spacing and quoting using prettier the same formatter many teams already run in their editors and ci paste minified or inconsistently indented json and click format the editor s content is replaced in place with the result so there s a single pane rather than separate input and output panels formatting runs entirely in your browser prettier s standalone build and its parser plugins are pulled in with a dynamic import only when you click format and the json you paste never leaves the page or touches a server under the hood the json parser id isn t a dedicated json grammar it s prettier s babel parser paired with the estree printer the same pipeline this site s javascript and typescript formatters use that makes it more forgiving than strict json trailing commas unquoted keys single quoted strings and or comments are all accepted in the input and normalized into valid double quoted json in the output anything the parser genuinely can t make sense of a missing brace a stray comma an unterminated string throws a syntax error with a line and column instead shown inline above the editor reach for this when you re looking at a minified api response a one line config file or json copied from browser devtools and need it laid out before you can find the field you re after it doubles as a quick validator since unparseable input fails loudly rather than silently passing through tab width is configurable from 1 to 8 spaces the semicolon toggle shown on the javascript and typescript formatters doesn t apply to json and is hidden on this page examples short arrays and objects collapse to one line text input tags html css js count 3 this tool tab size 2 short arrays objects stay on one line tags html css js count 3 json stringify data null 2 always one item per line tags html css js count 3 prettier only wraps when content exceeds its print width 80 characters by default json stringify data null 2 the usual one line replacement for this tool always puts one array item per line no matter how short the array is input doesn t have to be strict json text input not valid per strict json unquoted key single quotes trailing commas a 1 b two c 1 2 3 output normalized to strict double quoted json a 1 b two c 1 2 3 the json parser id is prettier s babel parser not json parse it tolerates javascript object literal syntax on the way in but always prints valid double quoted json handy for cleaning up json ish text copied from a console log or a js config file invalid json fails with a line and column text input missing closing brace a 1 b 2 error shown inline input itself is left untouched unexpected token expected 1 16 1 a 1 b 2 this is prettier s own syntaxerror message shown verbatim in the alert banner above the editor the pasted text is left exactly as is nothing is cleared or partially reformatted when parsing fails frequently asked questions is it safe to paste sensitive json into this formatter yes formatting runs entirely in your browser via prettier s standalone build nothing you paste is sent to a server logged or stored anywhere why does the formatter reject json that looks fine the tool parses your text before it can print it so any structural problem a missing comma an extra closing brace an unterminated string throws a syntax error with the exact line and column instead of guessing at a fix that message is shown verbatim in the banner above the editor and your original input is left untouched why did my array print on one line instead of one item per line prettier only breaks an array or object onto multiple lines when it doesn t fit within its print width 80 characters by default short values like html css js stay inline this is different from json stringify data null 2 which always puts one item per line regardless of length does formatting sort or deduplicate keys no property order is preserved exactly as written and duplicate keys are left in place rather than merged the formatter only changes whitespace and quoting not the structure of the data can i format json that has comments or trailing commas yes the parser behind this tool is prettier s babel based json parser which is more lenient than strict json it accepts trailing commas unquoted keys single quoted strings and or comments and normalizes all of it to valid double quoted json in the output related tools json beautifier and minifier two pane beautify minify tool with a live validity badge built on json parse stringify instead of prettier jwt decoder decode a jwt s header and payload then format the payload json here code diff compare two formatted json payloads side by side javascript formatter same prettier engine and parser family as this tool learn more lesson javascript json json parse json stringify replacers revivers and pretty printing lesson javascript objects the key value syntax json s grammar is based on w3docs tutoriais exemplos exercícios snippets e quizzes gratuitos para a web desde 2014 livros aprender html aprender css aprender javascript aprender git aprender java aprender php aprender python prática exercícios quizzes editor try it ferramentas html editor password generator html encoder code diff json beautifier empresa sobre contato política de privacidade idioma english deutsch русский français español português italiano 2026 w3docs todos os direitos reservados feito para desenvolvedores